IMI Heatmiser
The IMI Heatmiser Story
Shaping smart heating since 1968
Founded in 1968 in Blackburn, Lancashire, Heatmiser began as G&M Kay, a family-run electrical contracting firm. Over time, the company transitioned from local services to designing and manufacturing intelligent heating controls that delivered comfort, efficiency, and reliability in residential and commercial buildings.
By listening to installers, system designers, and homeowners, Heatmiser created connected, user-friendly products that became the preferred solution for many underfloor heating systems in the UK thanks to the introduction of zonal control functionality. This strong customer partnership and commitment to quality laid the foundation for Heatmiser’s role as a leader in smart climate control solutions.
Expanding our impact with IMI
In December 2022, Heatmiser joined IMI Hydronic Engineering, part of IMI plc. This strategic acquisition extended IMI’s connected solutions portfolio, adding smart heating controls that support both residential and commercial applications.
For IMI, Heatmiser represented an opportunity to expand into the fast-growing smart building market — aligning with global energy efficiency regulations and the demand for sustainable, digitally connected solutions.
For Heatmiser, joining IMI provided the resources and global reach to scale innovation, strengthen partnerships, and deliver smarter, greener buildings across Europe and beyond.
Our combined strengths:
Today, as IMI Heatmiser, part of IMI’s Climate Control sector, we continue to innovate with a portfolio of digital, energy-saving heating solutions that enhance comfort while reducing consumption and emissions.
Our offerings include Neo smart thermostats, neoStat / neoStat Pro models, neoAir v3 wireless units, Slimline-E v3 electric floor controllers, and multi-zone wiring centres such as UH8 / UH4 — all supported via neoHub (Gen 2) and wireless receivers.
Our combined strengths allow us to:
- Optimise comfort and efficiency across every room and building, leveraging products like neoStat and neoFlo room-by-room control.
- Deliver connected solutions through the neoHub and wireless receivers that simplify installation, improve system performance, and create measurable value.
- Support sustainability goals, helping homeowners and businesses reduce carbon footprints by enabling smarter control of heating systems via devices like neoAir and Slimline-E.
- Enable continuous improvement, supported by regular software updates to over 1.6 million installed neo devices, technical support, and a seamless digital experience.
By integrating Heatmiser’s smart control expertise (driven by product lines like neo, neoStat, and Slimline) with IMI’s global scale, hydronic engineering knowledge, and performance culture, we are shaping the future of climate control - smarter solutions. greater efficiency. a better world.
